Spike-making machine



(No Model.) 2 Sheets-Sheet 1.

- L. W. ESTES.

SPIKE MAKING MACHINE. No. 430,603. v Patented June 17, 1890.

(No Model.)

L. W. ESTES.

2 Sheets-Shget 2.

SPIKE MAKING MAGHINE. No. 430,603. Patented June 17, 1890.

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UNITED STATES PATENT OFFICE.

LAMONT IV. ESTES, OF SACRAMENTO, CALIFORNIA.

SPIKE-MAKING MACHINE.

SPECIFICATION forming part of Letters Patent No. 430,603, dated June 17,1890..

Application filed February 18, 1890. Serial No. 340,930. (No model.)

To all whom it may concern:

Be it known that I, LAMONT W. ESTES, a citizen of the United States,residing at Sacramento, Sacramento county, State of California, have invented an Improvement in Spike-Making Machines; and I hereby declare thefollowing to be afull, clear, and exact description of the same.

My invention relates to the class of machines for making spikes.

It consists in the novel constructions, combinations, and arrangementshereinafter fully described, and specifically pointed out in the claims.

The object of my invention is to provide a simple and effective machinefor beveling or tapering the ends of the spikes, and cutting each spikeoff from the bar as it is fed into the machine.

Referring to the accompanying drawings fora more complete explanation ofmy invention, Figure l is a plan of mymachine. Fig. 2 is a frontelevation of the same. Fig. 3 is an elevation taken from the left-handside of Fig. 1. Fig. 4 is an elevation from the righthand side. Fig. 5is a view showing a modification of the eccentrics and of the means foroperating the eccentric shafts. Fig. 6 is a detail of the eccentrics andintervening cutter.

A is aframe of suitable description, having at one end a power-shaft B,in which is a crank b, which operates a plunger 0, these parts beingessentially the same as those of a well-known form of bolt-headingmachine, the plunger being used to upset the head of the bolt, and in mymachine being used to form the head of the spike.

On the front of the machine is a rocking block I), which has fitted inits inner end the main jaw (l. Opposing these parts is a fixed block E,having fitted to it the main jaw 6. These two jaws form the clamps forholding the bar introduced between them.

The rocking block D, as shown in Fig. 2, is fulcrumed below at the point(1, and said block projects out to the side of the machine, and hasconnected with it, by the pin (1 the pivoted operating-lever F, the rearend of which carries an anti-friction roller f, upon which operates acam G, the particular shape of which is shown in Fig. 3, the said cambedesignated as H, as seen in Fig. 1.

ing upon the power-shaft B. This cam moves the lever, which in turnrocks the block D, therebycausing its jaw d to move through an arc of acircle, at the lower portion of which it is adapted to bind tightly uponthe inserted bar, and as it rises again, which it does by the weight ofthe other end of its block, it relieves said bar.

The operation of the parts as far as described is as follows: The bar,which is represented by X, is introduced into its place alongside of thefixed jaw, and then therocking jaw comes down on its other side andfirmly binds it between itself and the fixed jaw. Then the plunger comesnip and forms the head of the spike. In front of thesejaws aresupplemental jaws, the movable one being It is pivoted at h, and isoperated by means of a conmeeting-link h, which is joined to a pivotedbell-cran k lever or arms 7L2, operated by a connecting-rod 7L3, therear end of whichisprovided with a strap ILJ, encircling an eccentric orcam 71 on the drive-shaft. The stationary supplemental jaw isrepresented by I, and is opposite to the movable jaw II and in the samehorizontal plane. These two jaws are adapted to bind upon the projectingend of the bar X, so as to form a suitable resistance for the operationof the cutter. This cutter (designated by J) is a sliding bar, Figs. 1and 6, passing through the stationary block E, and adapted to be forcedagainst the projecting end of the bar X, just in front of where thesecondary jaws clamp it. This cutter is operated by a pivoted leverj,the rear end of which is provided with an anti-friction roller j,operated by a side cam 7' on the powershaft B.

The operation, taken up from the point at which it was left, is asfollows: The movable supplemental jaw H presses the bar X between itselfand the stationary supplemental jaw I, and, holding it tightly, said barX receives the stroke of the cutter J, and is thereby cut off into asuitable spike length. Now, in order to form the beveled or taperingpoint of the spike, I have the following construction: Seated in thefront of the machine on one side is an upper rock-shaft K, which carrieson its inner end an eccentric 7;, which lies just above the outer end ofthe bar X.

L is a second rock-shaft in the same vertical plane as the first, butbelow it, said shaft carrying on itsinner end an eccentric Z, which isunder the end of the barX. These eccen- 5 tries are operated by means ofcrank-arms M on the shafts Fig. 4, with which are connected links m, theother ends of which are attached to a reciprocating carriage N. Thiscarriage is projected forward by a cam O on [0 the power-shaft, theshape of which is shown in Fig. 4, said cam acting against anantifriction roller 01, on the carriage, and the carriage is withdrawnby means of a second anti-friction roller 02-, which operates within acam-groove 0 on the inner side of the cam O. The effect of thisconstruction is that the two eccentrics are brought down upon the end ofthe bar X and roll it into the beveled or tapering point of the spike.This operation necessarily takes place when the bar is free, as in therolling the spike must be moved inwardly. Therefore when the eccentricsbegin to operate on the spike the latter is relieved entirely of themain jaws and slips through the supplemental jaws, so that it can moveinwardly under the rolling effect of the eccentrics, and by slippingthrough the supplemental jaws avoid finning.

The reason for leaving the barX projected so far in front of the mainjaws will now be seen, as said projecting end must be sufficiently longto provide for the rolling, and at the same time the backward action ofthe eccentrics in forming the tapering point of 5 the spike and thenecessity for the supplemental jaws will also be seen in that having theprojecting end of the bar some provisionmust be made for the resistanceto the stroke of the cutter in severing the bar into spikelengths.

A feature of my machine will also be seen in the location andconstruction of the eccentrics and their shafts. By having theeccentrics just narrow enough to operate 5 upon the bar, and mountingsaid eccentrics upon shafts of smaller diameter, I am enabled to leave aspace between said shafts for the seating both of the stationarysupplemental jaw and the reciprocating cutterbar. Thisposition of thecutter-bar is clearly shown in Figs. 2 and 6, and when the eccentricsare turned out of contact with the bar and are in an inoperativeposition they are raised far enough to wholly relieve the bar and permitthe proper action of the cutter upon it.

In Fig. 5 I have shown a modification with regard to the mechanism bywhich the eccentrics are operated, and also a modification in the shapeof the eccentrics themselves. This latter feature consists simply indispensing with the complete eccentric and substituting thereforsegmental eccentrics, which serve the same purpose. In-

6 5 stead of the reciprocating carriage and intervening links and cranksby which the eccentrics are operated I may use, as is shown in thisfigure, a gear-train represented generally by P. I

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a spike-making machine, the combination of opposing main jawsbetween which the inner end of the bar is held, supplemental jaws forholding its projecting outer end, and a reciprocating cutter independentof said jaws for severing the bar just beyond the supplemental jaws,substantially as herein described.

2. In a spike-making machine, the opposing main jaws, in combinationwith the stationary supplemental jaw, the movable supplemental jaw forholding the spike at its projecting end, the link, connecting-rod,intervening connections between said rod and link, and the eccentric orcam on the powershaft for operating the movable supplemental jaw, andthe reciprocating cutter for severing the bar near the supplementaljaws, substantially as herein described.

3. In a spike-making machine, the combination of the main jaws forholding the bar at one end, the supplemental jaws for holding itsprojecting end, the independentlymoving cutter for severing the bar nearthe supplemental jaws, and the means for operating the cutter,consisting of the pivoted lever and the cam on the power-shaft foroperating said lever, substantially as herein described.

4. In a spike-making machine, the combination of the rock-shafts, theeccentrics on their inner ends operating to roll the beveled or taperingpoint of the spike, and the reciprocating cutter between therock-shafts, and adapted to sever the bar into spike lengths,substantially as herein described.

5. In a spike-making machine, the combination of the main jaws forholding the bar at one end, the supplemental jaws for bolding theprojecting end of the bar, the reciprocating cutter for severing the barnear the supplemental jaws, the rock-shafts above and below the cutterand between which said out ter is seated, and the eccentrics on therockshafts for operating 011 the severed end of the bar to form thebeveled or tapering end of the spike, substantially as herein described.

6. In a spike-making machine, the rockshafts having on their inner endsthe eccentries for rolling the beveled or tapering point of the spike,in combination with the cranks of the rock-shafts, the links of thecranks, the reciprocating carriage with which the links are connected,and the cams on the power-shaft for reciprocating the carriage,substantially as herein described.

In witness whereof I have hereunto set my hand.

LAMONT XV. ESTES.

Vitnesses:

S. H. NOURSE, H. 0. LEE.

IIO

